Germany is examining 10 cases of refugees accused of being a member of a terror organisation or taking part in war crimes abroad in an admission by the country’s police chief that will raise fears of terrorists among migrants.

"The federal states have so far reported to us around 40 attempts at contact from Salafists who wanted to recruit young refugees. We see this as a big risk"

Holger Muench, head of the BKA federal police

Holger Muench, head of the BKA federal police, said that the influx of refugees posed a domestic security threat as migrants continued to cross into the country.

Nationalities of migrants crossing between the Western Balkan countries and the EU, April-June 2015

Top Ten Nationalities

number of migrants

Syria

20,010

Afghanistan

18,848

Albania

3,691

Iraq

3,414

Pakistan

3,325

Congo

818

Bangladesh

811

Somalia

619

"The security situation is getting worse with the growing numbers of refugees," Mr Muench, head of the BKA federal police, told weekly magazine Focus.

“We are currently investigating around 10 cases on the suspicion that someone was involved in war crimes abroad or is a member of a terrorist organisation. It also partly involves forbidden symbols of the so-called IS [Islamic State of Iraq and the Levant] or similar groups.

"The federal states have so far reported to us around 40 attempts at contact from Salafists who wanted to recruit young refugees. We see this as a big risk."

"Conflicts among asylum-seekers are increasing; the mood among the Right is being stirred. This dynamic worries me," Mr Muench said, adding that the situation was "difficult and tense".

According to the police chief, the number of offences against refugee shelters has tripled to 600, from 198 last year. Of that number, 543 had a Right-wing background.

He said the BKA had registered 95 violent crimes and 49 arson attacks.

On Thursday, a 32-year-old German man arrested in the disappearance of a four-year-old Bosnian boy confessed to killing the child, German prosecutors said.

The man was turned in by his mother after she recognised him in a video released by police. She was interviewed by police when the man came to the house who then admitted to police the child's body was in the car.

The child is believed to have not been killed "today or yesterday", prosecutor Michael von Hagen said, as he added there was no evidence the man had a xenophobic motive or links to far-Right groups.